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gear transmission

A gear transmission and gear technology, applied in the direction of gear transmission, transmission, belt/chain/gear, etc., can solve the problems of increased cost and increased man-hours for drum trimming

Active Publication Date: 2016-06-22
NABLESCO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in Patent Document 1 image 3 And in the gear transmission shown in Figure 6, it is necessary to carry out drum-shaped finishing processing on both ends of the first meshing part in each internal gear pin, and carry out drum-shaped finishing processing on both ends of the second meshing part, and pass The connecting part connects these two meshing parts, so there is a problem that the cost increases
Furthermore, as shown in FIG. 7 of Patent Document 1, in the case where both ends of each externally toothed gear are crowned, the man-hours required for the crowning process increase and the cost increases.

Method used

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no. 1 approach

[0019] (The overall structure of the gear transmission)

[0020] In the gear transmission 1 according to the first embodiment, the first externally toothed gear 14 is oscillatingly rotated in conjunction with the first eccentric portion 10 a of the crankshaft 10 , and the second externally toothed gear 16 is connected to the second eccentric portion of the crankshaft 10 . 10b is interlocked to swing and rotate, thereby obtaining an output rotation decelerated with respect to the input rotation speed.

[0021] Such as figure 1 As shown, the gear transmission device 1 includes an outer cylinder 2, a plurality of internal tooth pins 3, a support 4, an input shaft 8, a plurality (for example, three) crankshafts 10, a first external gear 14, a second external gear 16 And a plurality (for example, 3) of transmission gears 20 .

[0022] Such as figure 2 As shown, the outer cylinder 2 is a member constituting the outer surface of the gear transmission 1 and has a substantially cy...

no. 2 approach

[0062] Figure 5 The gear transmission 1 according to the second embodiment of the present invention is an enlarged cross-sectional view showing the structure near the meshing portion of the internal pin 3 and the external gears 14 and 16 . In addition, in the following description, the same code|symbol as 1st Embodiment is attached|subjected to the same structure as 1st Embodiment, and description is abbreviate|omitted.

[0063] Such as Figure 5As shown, in the second embodiment, each internally toothed pin 3 has: a first reduced diameter portion 34 and a second reduced diameter portion 35 located near its axial center; The first columnar portion 36 at one of the outer ends in the direction;

[0064] The first columnar portion 36 has a cylindrical shape, and its outer diameter is constant in the axial direction. The second columnar portion 37 has a cylindrical shape, and its outer diameter is constant in the axial direction. The first reduced diameter portion 34 is proce...

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Abstract

The first external tooth (14a) has a first processed portion (142) at any one end, and the tooth surface of the first processed portion (142) is processed so that the closer to the axial end of the tooth surface, the more radially inward the tooth surface is. . The second external tooth (16a) has a second processed portion (162) at any one end, and the tooth surface of the second processed portion (162) is processed so that the closer to the axial end of the tooth surface, the more radially inward . In each internally toothed pin (3), a first reduced diameter portion is provided at a portion radially facing the end of the first external tooth (14a) on the side where the first processed portion (142) is not provided. (31), a second reduced-diameter portion (32) is provided at a portion radially facing the end of the second external tooth (16a) on the side where the second processed portion (162) is not provided.

Description

technical field [0001] The invention relates to a gear transmission device. Background technique [0002] Conventionally, there is known an eccentric oscillating type gear transmission in which an external gear meshed with an internal pin of the internal gear is oscillatingly rotated in conjunction with the eccentric rotation of the eccentric portion of the crankshaft, thereby achieving deceleration relative to the input rotational speed. The output rotation (for example, refer to Patent Document 1). [0003] In the gear transmission described in Patent Document 1, a plurality of internally toothed pins that mesh with two externally toothed gears are provided. Each internal tooth pin has a first engaging portion, a second engaging portion, and a connecting portion connecting the two engaging portions. Both ends in the axial direction of each engaging portion are subjected to drum finishing (Patent Document 1 image 3 ,Figure 6). Accordingly, the edge stress generated betw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/32
CPCF16H1/32F16H2001/323
Inventor 牧添义昭成濑隆
Owner NABLESCO CORP
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